- Mon - Sat 8:00 - 18:00
- [email protected]
- 0086-21-58386256
The wear mechanisms under different fiber orientations are strongly dependent on the cutting stress distributions. The evolution of tool wear profile is basically consistent with the stress distribution on the tool surface at different wear stages, and the extent of tool wear is determined by the magnitude of stress on the tool surface. ...
sand environment of Alashan and numerically simulated the erosion and wear process of the blade coatings of a 1.5 MW horizontal axis wind turbine under rotational conditions using the DPM model.
Based on the results of experiments and finite element simulations, the interaction mechanism between sand and wheel-rail interface was proposed and the …
1 Introduction. Tribology is the study of friction, wear, and the lubrication of interacting surfaces. As one of the critical tribological domains and a persistent phenomenon regarding the deformation, …
The results reveal the intricate interplay of contact pressure, slip ratio, material properties, and lubrication in determining wear and ratcheting behaviour. Oxidative and mild wear mechanisms were …
Characterisation of abrasive wear mechanisms under 2-body and 3-body conditions using three different types of rocks as abrasives. ... Investigating the influence of sand particles properties on abrasive wear behaviour. Wear (2012) Y. Xie et al. Effects of particle size, pad and contact pressure in free abrasive polishing. Wear (1996)
Wear mechanism and life prediction of the ripper in a 9‐m‐diameter shield machine tunneling project of the Beijing new airport line in a sand‐pebble stratum
According to the erosion wear rate, wear morphology characteristics, and wear mechanism of the coatings on different parts of the blade, the wear area can be categorized into three regions: the chiseling region, cutting region, and stagnation region.
The fineness modulus of natural river sand is 2.30, which is smaller than that of FNS. Crushed limestone with a particle size of 5 mm to 20 mm was used as coarse aggregates. ... In order to quantitative study the wear-resistant mechanism of concrete from material hardness, density and interfacial bond strength, four kinds of tests were …
The wear mechanism of the hard-facing layer was mainly plastic deformation with a wide groove, and the surface cracks promoted the removal of the material. The removal of the binder phase caused by micro-cutting was the main wear mechanism of the laser cladding Ni60-WC coatings. ... forming three-body wear. Then, …
For the advantage of patternless casting technology in mould making, the wear mechanism of PCD tool is studied and the prediction models of wear ratio are built based on the sand mould milling ...
Discussion on tool wear mechanism and its relation to material removal. Longitudinal wear of the tool is a complex phenomenon arising from the hammering action by the abrasive particles at ultrasonic frequency, abrasion by the flow of the slurry, and cavitation effects [22]. Fatigue wear and erosive wear are considered to occur in this …
Also, wear rate increased from 3.5 × 10 −5 mm 3 /Nm for 0.02 m/s to 9.1 × 10 −5 mm 3 /Nm for 0.2 m/s and saturated at higher sliding velocities. To reveal the underlying wear mechanisms, microstructural characterizations were conducted and discussed in the following sections.
Download Citation | Study on erosion wear mechanism of natural gas elbow pipe with uneven corrosion defects | Due to erosion and corrosion, natural gas pipelines can be easily damaged, causing ...
Wear is commonly classified according to so-called wear types, which occur in isolation or complex interaction. Wear mechanisms and/or sub-mechanisms frequently overlap and occur in a synergistic manner, …
The interaction between the uneven, sharp protrusions on the workpiece's character and the abrasive particles causes the abrasive particles' mechanical wear. As shown in Fig. 3 (b), 3 (c), it ...
Tool wear is a key factor affecting many aspects of metal cutting machining, including surface quality, machining efficiency and tool life. As machining continues to evolve towards intelligence, hot spots and trends in tool wear-related research are also changing. However, in the current research on tool wear, there are still no recognized …
Even if titanium alloys are widely used for biomedical applications, the tendency they show to wear is a matter of concern for their durability. In this research work, Ultrasonic Vibration Turning (UVT) was used to generate texturized surfaces on Ti6Al4V cylinders for improving their wear performances. To prove that, in vitro wear tests were …
A wear prediction model of linear fitting field data was developed for a 190‐ripper face to obtain the optimum shield driving distance in the sand‐pebble stratum. The average …
Wear and lubrication mechanism of aeolian sand on asphalt pavement was studied. • Rolling-sliding friction exists between tire/road surface with particulate contaminants. • Angularity of the sand accelerates the wear of the asphalt membrane on pavement. • The wearing rate is proposed to evaluate the third body wear effect of …
Study on erosion wear mechanism of natural gas elbow pipe with uneven corrosion defects. ... Yi H, Huang Z, et al. Erosion mechanism and sensitivity parameter analysis of natural gas curved pipeline. J Press Vessel Technol 2019; 141(3 ... Hu H. Study on sand erosion behavior of L360N pipeline steel in shale gas production. Chem Eng Oil …
Current three-body abrasive wear theories are based on a macroscale abrasive indentation process, and these theories claim that material wear cannot be achieved without damaging the hard mating surface. In this study, the process of three-body nano-abrasive wear of a system including a single crystalline silicon substrate, an …
The wear mechanisms considered so far are progressive in nature: in each case the material removal starts from the beginning of the contact and it continues almost linearly with time. In addition, the contact phenomena are always characterized by large plastic deformations . ... 4.5.5 Dry-Sand, Rubber-Wheel Wear Test (DSRW)
Wear mechanism of diamond sand in alumina grinding (a) two-body wear, (b) mixed-mode wear when wafer size = grain size, (c) mixed-mode wear when wafer size
The presence of sand utilized to improve the adhesion and increase traction of locomotives can be seen as the main factor leading to grazing of locomotive wheels ... Adhesive wear mechanism is divided into two forms of moderate and severe decline in the rate of wear of the metal from the body and particle size . The moderate form appears in ...
In ultra-precision machining of ferrous materials, diamond tools are easy to graphitize due to chemical reactions with ferrous materials, which can cause severe tool wear. The sharpness of the original cutting edge therefore cannot be maintained to machine mirror-level surface roughness. It cannot through a high-efficiency and low-cost way to …
Erosive wear is inexorable in chemical and hydrocarbon transportation systems. In this study, the worn surface morphologies and erosive wear mechanisms were discussed to analyze the primary mechanism of erosion in Tee (T) pipe configurations for two-phase (liquid-sand) and three-phase (gas–liquid-sand) flow conditions.
The mechanism of the tribomate pairs' anti-abrasive wear(Mo-alloy sprayed piston ring/P-B cylinder bore) under certain amounts of quartz sand was studied by SRV subsection experimentation.
The PCD cutting tool is used to dry mill foundry sand materials, SEM is used for observing the wear morphology of the cutting tool, and EDS is used to analyze the components of the wear area of ...
